Watch the You Say Diminish, I Say Demolish online guitar lesson by David Hamburger from 30 Blues Intros, Turnarounds, & Endings You MUST Know

For this ending, we're sneaking a little squared-off, sixteenth-note double time into the slow blues groove. While we're at it, we're using that double time to spell out a bit of the dread diminished sound, using it as a passing chord from IV back to I (D to D#º to A7). That's all bookended by basic minor pentatonic licks, to keep things from getting too uncontrollably jazzy.